Package org.aspectj.weaver.bcel

Source Code of org.aspectj.weaver.bcel.AtAjAttributes$AjAttributeStruct

/*******************************************************************************
* Copyright (c) 2005 Contributors.
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v1.0
* which accompanies this distribution and is available at
* http://eclipse.org/legal/epl-v10.html
*
* Contributors:
* initial implementation              Alexandre Vasseur
*******************************************************************************/
package org.aspectj.weaver.bcel;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.StringTokenizer;

import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.Attribute;
import org.aspectj.apache.bcel.classfile.Constant;
import org.aspectj.apache.bcel.classfile.ConstantUtf8;
import org.aspectj.apache.bcel.classfile.Field;
import org.aspectj.apache.bcel.classfile.JavaClass;
import org.aspectj.apache.bcel.classfile.LocalVariable;
import org.aspectj.apache.bcel.classfile.LocalVariableTable;
import org.aspectj.apache.bcel.classfile.Method;
import org.aspectj.apache.bcel.classfile.Unknown;
import org.aspectj.apache.bcel.classfile.annotation.AnnotationGen;
import org.aspectj.apache.bcel.classfile.annotation.ArrayElementValue;
import org.aspectj.apache.bcel.classfile.annotation.ClassElementValue;
import org.aspectj.apache.bcel.classfile.annotation.ElementValue;
import org.aspectj.apache.bcel.classfile.annotation.NameValuePair;
import org.aspectj.apache.bcel.classfile.annotation.RuntimeAnnos;
import org.aspectj.apache.bcel.classfile.annotation.RuntimeVisAnnos;
import org.aspectj.apache.bcel.generic.Type;
import org.aspectj.asm.AsmManager;
import org.aspectj.asm.IHierarchy;
import org.aspectj.asm.IProgramElement;
import org.aspectj.bridge.IMessage;
import org.aspectj.bridge.IMessageHandler;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.bridge.Message;
import org.aspectj.bridge.MessageUtil;
import org.aspectj.weaver.Advice;
import org.aspectj.weaver.AdviceKind;
import org.aspectj.weaver.AjAttribute;
import org.aspectj.weaver.AjAttribute.WeaverVersionInfo;
import org.aspectj.weaver.AjcMemberMaker;
import org.aspectj.weaver.BindingScope;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.MethodDelegateTypeMunger;
import org.aspectj.weaver.NameMangler;
import org.aspectj.weaver.ReferenceType;
import org.aspectj.weaver.ReferenceTypeDelegate;
import org.aspectj.weaver.ResolvedMember;
import org.aspectj.weaver.ResolvedPointcutDefinition;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.VersionedDataInputStream;
import org.aspectj.weaver.WeaverMessages;
import org.aspectj.weaver.World;
import org.aspectj.weaver.patterns.Bindings;
import org.aspectj.weaver.patterns.DeclareErrorOrWarning;
import org.aspectj.weaver.patterns.DeclareParents;
import org.aspectj.weaver.patterns.DeclareParentsMixin;
import org.aspectj.weaver.patterns.DeclarePrecedence;
import org.aspectj.weaver.patterns.FormalBinding;
import org.aspectj.weaver.patterns.IScope;
import org.aspectj.weaver.patterns.ParserException;
import org.aspectj.weaver.patterns.PatternParser;
import org.aspectj.weaver.patterns.PerCflow;
import org.aspectj.weaver.patterns.PerClause;
import org.aspectj.weaver.patterns.PerFromSuper;
import org.aspectj.weaver.patterns.PerObject;
import org.aspectj.weaver.patterns.PerSingleton;
import org.aspectj.weaver.patterns.PerTypeWithin;
import org.aspectj.weaver.patterns.Pointcut;
import org.aspectj.weaver.patterns.TypePattern;

/**
* Annotation defined aspect reader. Reads the Java 5 annotations and turns them into AjAttributes
*
* @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur</a>
*/
public class AtAjAttributes {

  private final static List<AjAttribute> NO_ATTRIBUTES = Collections.emptyList();
  private final static String[] EMPTY_STRINGS = new String[0];
  private final static String VALUE = "value";
  private final static String ARGNAMES = "argNames";
  private final static String POINTCUT = "pointcut";
  private final static String THROWING = "throwing";
  private final static String RETURNING = "returning";
  private final static String STRING_DESC = "Ljava/lang/String;";

  /**
   * A struct that allows to add extra arguments without always breaking the API
   */
  private static class AjAttributeStruct {

    /**
     * The list of AjAttribute.XXX that we are populating from the @AJ read
     */
    List<AjAttribute> ajAttributes = new ArrayList<AjAttribute>();

    /**
     * The resolved type (class) for which we are reading @AJ for (be it class, method, field annotations)
     */
    final ResolvedType enclosingType;

    final ISourceContext context;
    final IMessageHandler handler;

    public AjAttributeStruct(ResolvedType type, ISourceContext sourceContext, IMessageHandler messageHandler) {
      enclosingType = type;
      context = sourceContext;
      handler = messageHandler;
    }
  }

  /**
   * A struct when we read @AJ on method
   *
   * @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur</a>
   */
  private static class AjAttributeMethodStruct extends AjAttributeStruct {

    // argument names used for formal binding
    private String[] m_argumentNamesLazy = null;
    public String unparsedArgumentNames = null; // Set only if discovered as
    // argNames attribute of
    // annotation

    final Method method;
    final BcelMethod bMethod;

    public AjAttributeMethodStruct(Method method, BcelMethod bMethod, ResolvedType type, ISourceContext sourceContext,
        IMessageHandler messageHandler) {
      super(type, sourceContext, messageHandler);
      this.method = method;
      this.bMethod = bMethod;
    }

    public String[] getArgumentNames() {
      if (m_argumentNamesLazy == null) {
        m_argumentNamesLazy = getMethodArgumentNames(method, unparsedArgumentNames, this);
      }
      return m_argumentNamesLazy;
    }
  }

  /**
   * A struct when we read @AJ on field
   */
  private static class AjAttributeFieldStruct extends AjAttributeStruct {

    final Field field;

    // final BcelField bField;

    public AjAttributeFieldStruct(Field field, BcelField bField, ResolvedType type, ISourceContext sourceContext,
        IMessageHandler messageHandler) {
      super(type, sourceContext, messageHandler);
      this.field = field;
      // this.bField = bField;
    }
  }

  /**
   * Annotations are RuntimeVisible only. This allow us to not visit RuntimeInvisible ones.
   *
   * @param attribute
   * @return true if runtime visible annotation
   */
  public static boolean acceptAttribute(Attribute attribute) {
    return (attribute instanceof RuntimeVisAnnos);
  }

  /**
   * Extract class level annotations and turn them into AjAttributes.
   *
   * @param javaClass
   * @param type
   * @param context
   * @param msgHandler
   * @return list of AjAttributes
   */
  public static List<AjAttribute> readAj5ClassAttributes(AsmManager model, JavaClass javaClass, ReferenceType type,
      ISourceContext context, IMessageHandler msgHandler, boolean isCodeStyleAspect) {
    boolean ignoreThisClass = javaClass.getClassName().charAt(0) == 'o'
        && javaClass.getClassName().startsWith("org.aspectj.lang.annotation");
    if (ignoreThisClass) {
      return NO_ATTRIBUTES;
    }
    boolean containsPointcut = false;
    boolean containsAnnotationClassReference = false;
    Constant[] cpool = javaClass.getConstantPool().getConstantPool();
    for (int i = 0; i < cpool.length; i++) {
      Constant constant = cpool[i];
      if (constant != null && constant.getTag() == Constants.CONSTANT_Utf8) {
        String constantValue = ((ConstantUtf8) constant).getValue();
        if (constantValue.length() > 28 && constantValue.charAt(1) == 'o') {
          if (constantValue.startsWith("Lorg/aspectj/lang/annotation")) {
            containsAnnotationClassReference = true;
            if ("Lorg/aspectj/lang/annotation/DeclareAnnotation;".equals(constantValue)) {
              msgHandler.handleMessage(new Message(
                  "Found @DeclareAnnotation while current release does not support it (see '" + type.getName()
                      + "')", IMessage.WARNING, null, type.getSourceLocation()));
            }
            if ("Lorg/aspectj/lang/annotation/Pointcut;".equals(constantValue)) {
              containsPointcut = true;
            }
          }

        }
      }
    }
    if (!containsAnnotationClassReference) {
      return NO_ATTRIBUTES;
    }

    AjAttributeStruct struct = new AjAttributeStruct(type, context, msgHandler);
    Attribute[] attributes = javaClass.getAttributes();
    boolean hasAtAspectAnnotation = false;
    boolean hasAtPrecedenceAnnotation = false;

    WeaverVersionInfo wvinfo = null;
    for (int i = 0; i < attributes.length; i++) {
      Attribute attribute = attributes[i];
      if (acceptAttribute(attribute)) {
        RuntimeAnnos rvs = (RuntimeAnnos) attribute;
        // we don't need to look for several attribute occurrences since
        // it cannot happen as per JSR175
        if (!isCodeStyleAspect && !javaClass.isInterface()) {
          hasAtAspectAnnotation = handleAspectAnnotation(rvs, struct);
          // TODO AV - if put outside the if isCodeStyleAspect then we
          // would enable mix style
          hasAtPrecedenceAnnotation = handlePrecedenceAnnotation(rvs, struct);
        }
        // there can only be one RuntimeVisible bytecode attribute
        break;
      }
    }
    for (int i = attributes.length - 1; i >= 0; i--) {
      Attribute attribute = attributes[i];
      if (attribute.getName().equals(WeaverVersionInfo.AttributeName)) {
        try {
          VersionedDataInputStream s = new VersionedDataInputStream(new ByteArrayInputStream(
              ((Unknown) attribute).getBytes()), null);
          wvinfo = WeaverVersionInfo.read(s);
          struct.ajAttributes.add(0, wvinfo);
        } catch (IOException ioe) {
          ioe.printStackTrace();
        }
      }
    }
    if (wvinfo == null) {
      // If we are in here due to a resetState() call (presumably because of reweavable state processing), the
      // original type delegate will have been set with a version but that version will be missing from
      // the new set of attributes (looks like a bug where the version attribute was not included in the
      // data compressed into the attribute). So rather than 'defaulting' to current, we should use one
      // if it set on the delegate for the type.
      ReferenceTypeDelegate delegate = type.getDelegate();
      if (delegate instanceof BcelObjectType) {
        wvinfo = ((BcelObjectType) delegate).getWeaverVersionAttribute();
        if (wvinfo != null) {
          if (wvinfo.getMajorVersion() != WeaverVersionInfo.WEAVER_VERSION_MAJOR_UNKNOWN) {
            // use this one
            struct.ajAttributes.add(0, wvinfo);
          } else {
            wvinfo = null;
          }
        }
      }
      if (wvinfo == null) {
        struct.ajAttributes.add(0, wvinfo = new AjAttribute.WeaverVersionInfo());
      }
    }

    // basic semantic check
    if (hasAtPrecedenceAnnotation && !hasAtAspectAnnotation) {
      msgHandler.handleMessage(new Message("Found @DeclarePrecedence on a non @Aspect type '" + type.getName() + "'",
          IMessage.WARNING, null, type.getSourceLocation()));
      // bypass what we have read
      return NO_ATTRIBUTES;
    }

    // the following block will not detect @Pointcut in non @Aspect types
    // for optimization purpose
    if (!(hasAtAspectAnnotation || isCodeStyleAspect) && !containsPointcut) {
      return NO_ATTRIBUTES;
    }

    // FIXME AV - turn on when ajcMightHaveAspect
    // if (hasAtAspectAnnotation && type.isInterface()) {
    // msgHandler.handleMessage(
    // new Message(
    // "Found @Aspect on an interface type '" + type.getName() + "'",
    // IMessage.WARNING,
    // null,
    // type.getSourceLocation()
    // )
    // );
    // // bypass what we have read
    // return EMPTY_LIST;
    // }

    // semantic check: @Aspect must be public
    // FIXME AV - do we really want to enforce that?
    // if (hasAtAspectAnnotation && !javaClass.isPublic()) {
    // msgHandler.handleMessage(
    // new Message(
    // "Found @Aspect annotation on a non public class '" +
    // javaClass.getClassName() + "'",
    // IMessage.ERROR,
    // null,
    // type.getSourceLocation()
    // )
    // );
    // return EMPTY_LIST;
    // }

    // code style pointcuts are class attributes
    // we need to gather the @AJ pointcut right now and not at method level
    // annotation extraction time
    // in order to be able to resolve the pointcut references later on
    // we don't need to look in super class, the pointcut reference in the
    // grammar will do it

    for (int i = 0; i < javaClass.getMethods().length; i++) {
      Method method = javaClass.getMethods()[i];
      if (method.getName().startsWith(NameMangler.PREFIX)) {
        continue; // already dealt with by ajc...
      }
      // FIXME alex optimize, this method struct will gets recreated for
      // advice extraction
      AjAttributeMethodStruct mstruct = null;
      boolean processedPointcut = false;
      Attribute[] mattributes = method.getAttributes();
      for (int j = 0; j < mattributes.length; j++) {
        Attribute mattribute = mattributes[j];
        if (acceptAttribute(mattribute)) {
          // TODO speed all this nonsense up rather than looking
          // through all the annotations every time
          // same for fields
          mstruct = new AjAttributeMethodStruct(method, null, type, context, msgHandler);
          processedPointcut = handlePointcutAnnotation((RuntimeAnnos) mattribute, mstruct);
          if (!processedPointcut) {
            processedPointcut = handleDeclareMixinAnnotation((RuntimeAnnos) mattribute, mstruct);
          }
          // there can only be one RuntimeVisible bytecode attribute
          break;
        }
      }
      if (processedPointcut) {
        struct.ajAttributes.addAll(mstruct.ajAttributes);
      }
    }

    // code style declare error / warning / implements / parents are field
    // attributes
    Field[] fs = javaClass.getFields();
    for (int i = 0; i < fs.length; i++) {
      Field field = fs[i];
      if (field.getName().startsWith(NameMangler.PREFIX)) {
        continue; // already dealt with by ajc...
      }
      // FIXME alex optimize, this method struct will gets recreated for
      // advice extraction
      AjAttributeFieldStruct fstruct = new AjAttributeFieldStruct(field, null, type, context, msgHandler);
      Attribute[] fattributes = field.getAttributes();

      for (int j = 0; j < fattributes.length; j++) {
        Attribute fattribute = fattributes[j];
        if (acceptAttribute(fattribute)) {
          RuntimeAnnos frvs = (RuntimeAnnos) fattribute;
          if (handleDeclareErrorOrWarningAnnotation(model, frvs, fstruct)
              || handleDeclareParentsAnnotation(frvs, fstruct)) {
            // semantic check - must be in an @Aspect [remove if
            // previous block bypassed in advance]
            if (!type.isAnnotationStyleAspect() && !isCodeStyleAspect) {
              msgHandler.handleMessage(new Message("Found @AspectJ annotations in a non @Aspect type '"
                  + type.getName() + "'", IMessage.WARNING, null, type.getSourceLocation()));
              // go ahead
            }
          }
          // there can only be one RuntimeVisible bytecode attribute
          break;
        }
      }
      struct.ajAttributes.addAll(fstruct.ajAttributes);
    }

    return struct.ajAttributes;
  }

  /**
   * Extract method level annotations and turn them into AjAttributes.
   *
   * @param method
   * @param type
   * @param context
   * @param msgHandler
   * @return list of AjAttributes
   */
  public static List<AjAttribute> readAj5MethodAttributes(Method method, BcelMethod bMethod, ResolvedType type,
      ResolvedPointcutDefinition preResolvedPointcut, ISourceContext context, IMessageHandler msgHandler) {
    if (method.getName().startsWith(NameMangler.PREFIX)) {
      return Collections.emptyList(); // already dealt with by ajc...
    }

    AjAttributeMethodStruct struct = new AjAttributeMethodStruct(method, bMethod, type, context, msgHandler);
    Attribute[] attributes = method.getAttributes();

    // we remember if we found one @AJ annotation for minimal semantic error
    // reporting
    // the real reporting beeing done thru AJDT and the compiler mapping @AJ
    // to AjAtttribute
    // or thru APT
    //
    // Note: we could actually skip the whole thing if type is not itself an
    // @Aspect
    // but then we would not see any warning. We do bypass for pointcut but
    // not for advice since it would
    // be too silent.
    boolean hasAtAspectJAnnotation = false;
    boolean hasAtAspectJAnnotationMustReturnVoid = false;
    for (int i = 0; i < attributes.length; i++) {
      Attribute attribute = attributes[i];
      try {
        if (acceptAttribute(attribute)) {
          RuntimeAnnos rvs = (RuntimeAnnos) attribute;
          hasAtAspectJAnnotationMustReturnVoid = hasAtAspectJAnnotationMustReturnVoid
              || handleBeforeAnnotation(rvs, struct, preResolvedPointcut);
          hasAtAspectJAnnotationMustReturnVoid = hasAtAspectJAnnotationMustReturnVoid
              || handleAfterAnnotation(rvs, struct, preResolvedPointcut);
          hasAtAspectJAnnotationMustReturnVoid = hasAtAspectJAnnotationMustReturnVoid
              || handleAfterReturningAnnotation(rvs, struct, preResolvedPointcut, bMethod);
          hasAtAspectJAnnotationMustReturnVoid = hasAtAspectJAnnotationMustReturnVoid
              || handleAfterThrowingAnnotation(rvs, struct, preResolvedPointcut, bMethod);
          hasAtAspectJAnnotation = hasAtAspectJAnnotation || handleAroundAnnotation(rvs, struct, preResolvedPointcut);
          // there can only be one RuntimeVisible bytecode attribute
          break;
        }
      } catch (ReturningFormalNotDeclaredInAdviceSignatureException e) {
        msgHandler.handleMessage(new Message(WeaverMessages.format(WeaverMessages.RETURNING_FORMAL_NOT_DECLARED_IN_ADVICE,
            e.getFormalName()), IMessage.ERROR, null, bMethod.getSourceLocation()));
      } catch (ThrownFormalNotDeclaredInAdviceSignatureException e) {
        msgHandler.handleMessage(new Message(WeaverMessages.format(WeaverMessages.THROWN_FORMAL_NOT_DECLARED_IN_ADVICE,
            e.getFormalName()), IMessage.ERROR, null, bMethod.getSourceLocation()));
      }
    }
    hasAtAspectJAnnotation = hasAtAspectJAnnotation || hasAtAspectJAnnotationMustReturnVoid;

    // semantic check - must be in an @Aspect [remove if previous block
    // bypassed in advance]
    if (hasAtAspectJAnnotation && !type.isAspect()) { // isAnnotationStyleAspect())
      // {
      msgHandler.handleMessage(new Message("Found @AspectJ annotations in a non @Aspect type '" + type.getName() + "'",
          IMessage.WARNING, null, type.getSourceLocation()));
      // go ahead
    }
    // semantic check - advice must be public
    if (hasAtAspectJAnnotation && !struct.method.isPublic()) {
      msgHandler.handleMessage(new Message("Found @AspectJ annotation on a non public advice '"
          + methodToString(struct.method) + "'", IMessage.ERROR, null, type.getSourceLocation()));
      // go ahead
    }

    // semantic check - advice must not be static
    if (hasAtAspectJAnnotation && struct.method.isStatic()) {
      msgHandler.handleMessage(MessageUtil.error("Advice cannot be declared static '" + methodToString(struct.method) + "'",
          type.getSourceLocation()));
      // new Message(
      // "Advice cannot be declared static '" +
      // methodToString(struct.method) + "'",
      // IMessage.ERROR,
      // null,
      // type.getSourceLocation()
      // )
      // );
      // go ahead
    }

    // semantic check for non around advice must return void
    if (hasAtAspectJAnnotationMustReturnVoid && !Type.VOID.equals(struct.method.getReturnType())) {
      msgHandler.handleMessage(new Message("Found @AspectJ annotation on a non around advice not returning void '"
          + methodToString(struct.method) + "'", IMessage.ERROR, null, type.getSourceLocation()));
      // go ahead
    }

    return struct.ajAttributes;
  }

  /**
   * Extract field level annotations and turn them into AjAttributes.
   *
   * @param field
   * @param type
   * @param context
   * @param msgHandler
   * @return list of AjAttributes, always empty for now
   */
  public static List<AjAttribute> readAj5FieldAttributes(Field field, BcelField bField, ResolvedType type,
      ISourceContext context, IMessageHandler msgHandler) {
    // Note: field annotation are for ITD and DEOW - processed at class
    // level directly
    return Collections.emptyList();
  }

  /**
   * Read @Aspect
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleAspectAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeStruct struct) {
    AnnotationGen aspect = getAnnotation(runtimeAnnotations, AjcMemberMaker.ASPECT_ANNOTATION);
    if (aspect != null) {
      // semantic check for inheritance (only one level up)
      boolean extendsAspect = false;
      if (!"java.lang.Object".equals(struct.enclosingType.getSuperclass().getName())) {
        if (!struct.enclosingType.getSuperclass().isAbstract() && struct.enclosingType.getSuperclass().isAspect()) {
          reportError("cannot extend a concrete aspect", struct);
          return false;
        }
        extendsAspect = struct.enclosingType.getSuperclass().isAspect();
      }

      NameValuePair aspectPerClause = getAnnotationElement(aspect, VALUE);
      final PerClause perClause;
      if (aspectPerClause == null) {
        // empty value means singleton unless inherited
        if (!extendsAspect) {
          perClause = new PerSingleton();
        } else {
          perClause = new PerFromSuper(struct.enclosingType.getSuperclass().getPerClause().getKind());
        }
      } else {
        String perX = aspectPerClause.getValue().stringifyValue();
        if (perX == null || perX.length() <= 0) {
          perClause = new PerSingleton();
        } else {
          perClause = parsePerClausePointcut(perX, struct);
        }
      }
      if (perClause == null) {
        // could not parse it, ignore the aspect
        return false;
      } else {
        perClause.setLocation(struct.context, -1, -1);// struct.context.getOffset(),
        // struct.context.getOffset()+1);//FIXME
        // AVASM
        // Not setting version here
        // struct.ajAttributes.add(new AjAttribute.WeaverVersionInfo());
        AjAttribute.Aspect aspectAttribute = new AjAttribute.Aspect(perClause);
        struct.ajAttributes.add(aspectAttribute);
        FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
        final IScope binding;
        binding = new BindingScope(struct.enclosingType, struct.context, bindings);

        // // we can't resolve here since the perclause typically refers
        // to pointcuts
        // // defined in the aspect that we haven't told the
        // BcelObjectType about yet.
        //
        // perClause.resolve(binding);

        // so we prepare to do it later...
        aspectAttribute.setResolutionScope(binding);
        return true;
      }
    }
    return false;
  }

  /**
   * Read a perClause, returns null on failure and issue messages
   *
   * @param perClauseString like "pertarget(.....)"
   * @param struct for which we are parsing the per clause
   * @return a PerClause instance
   */
  private static PerClause parsePerClausePointcut(String perClauseString, AjAttributeStruct struct) {
    final String pointcutString;
    Pointcut pointcut = null;
    TypePattern typePattern = null;
    final PerClause perClause;
    if (perClauseString.startsWith(PerClause.KindAnnotationPrefix.PERCFLOW.getName())) {
      pointcutString = PerClause.KindAnnotationPrefix.PERCFLOW.extractPointcut(perClauseString);
      pointcut = parsePointcut(pointcutString, struct, false);
      perClause = new PerCflow(pointcut, false);
    } else if (perClauseString.startsWith(PerClause.KindAnnotationPrefix.PERCFLOWBELOW.getName())) {
      pointcutString = PerClause.KindAnnotationPrefix.PERCFLOWBELOW.extractPointcut(perClauseString);
      pointcut = parsePointcut(pointcutString, struct, false);
      perClause = new PerCflow(pointcut, true);
    } else if (perClauseString.startsWith(PerClause.KindAnnotationPrefix.PERTARGET.getName())) {
      pointcutString = PerClause.KindAnnotationPrefix.PERTARGET.extractPointcut(perClauseString);
      pointcut = parsePointcut(pointcutString, struct, false);
      perClause = new PerObject(pointcut, false);
    } else if (perClauseString.startsWith(PerClause.KindAnnotationPrefix.PERTHIS.getName())) {
      pointcutString = PerClause.KindAnnotationPrefix.PERTHIS.extractPointcut(perClauseString);
      pointcut = parsePointcut(pointcutString, struct, false);
      perClause = new PerObject(pointcut, true);
    } else if (perClauseString.startsWith(PerClause.KindAnnotationPrefix.PERTYPEWITHIN.getName())) {
      pointcutString = PerClause.KindAnnotationPrefix.PERTYPEWITHIN.extractPointcut(perClauseString);
      typePattern = parseTypePattern(pointcutString, struct);
      perClause = new PerTypeWithin(typePattern);
    } else if (perClauseString.equalsIgnoreCase(PerClause.SINGLETON.getName() + "()")) {
      perClause = new PerSingleton();
    } else {
      // could not parse the @AJ perclause - fallback to singleton and
      // issue an error
      reportError("@Aspect per clause cannot be read '" + perClauseString + "'", struct);
      return null;
    }

    if (!PerClause.SINGLETON.equals(perClause.getKind()) && !PerClause.PERTYPEWITHIN.equals(perClause.getKind())
        && pointcut == null) {
      // we could not parse the pointcut
      return null;
    }
    if (PerClause.PERTYPEWITHIN.equals(perClause.getKind()) && typePattern == null) {
      // we could not parse the type pattern
      return null;
    }
    return perClause;
  }

  /**
   * Read @DeclarePrecedence
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handlePrecedenceAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeStruct struct) {
    AnnotationGen aspect = getAnnotation(runtimeAnnotations, AjcMemberMaker.DECLAREPRECEDENCE_ANNOTATION);
    if (aspect != null) {
      NameValuePair precedence = getAnnotationElement(aspect, VALUE);
      if (precedence != null) {
        String precedencePattern = precedence.getValue().stringifyValue();
        PatternParser parser = new PatternParser(precedencePattern);
        DeclarePrecedence ajPrecedence = parser.parseDominates();
        struct.ajAttributes.add(new AjAttribute.DeclareAttribute(ajPrecedence));
        return true;
      }
    }
    return false;
  }

  // /**
  // * Read @DeclareImplements
  // *
  // * @param runtimeAnnotations
  // * @param struct
  // * @return true if found
  // */
  // private static boolean
  // handleDeclareImplementsAnnotation(RuntimeAnnotations runtimeAnnotations,
  // AjAttributeFieldStruct
  // struct) {//, ResolvedPointcutDefinition preResolvedPointcut) {
  // Annotation deci = getAnnotation(runtimeAnnotations,
  // AjcMemberMaker.DECLAREIMPLEMENTS_ANNOTATION);
  // if (deci != null) {
  // ElementNameValuePairGen deciPatternNVP = getAnnotationElement(deci,
  // VALUE);
  // String deciPattern = deciPatternNVP.getValue().stringifyValue();
  // if (deciPattern != null) {
  // TypePattern typePattern = parseTypePattern(deciPattern, struct);
  // ResolvedType fieldType =
  // UnresolvedType.forSignature(struct.field.getSignature()).resolve(struct.enclosingType.getWorld());
  // if (fieldType.isPrimitiveType()) {
  // return false;
  // } else if (fieldType.isInterface()) {
  // TypePattern parent = new
  // ExactTypePattern(UnresolvedType.forSignature(struct.field.getSignature()),
  // false, false);
  // parent.resolve(struct.enclosingType.getWorld());
  // List parents = new ArrayList(1);
  // parents.add(parent);
  // //TODO kick ISourceLocation sl = struct.bField.getSourceLocation(); ??
  // struct.ajAttributes.add(
  // new AjAttribute.DeclareAttribute(
  // new DeclareParents(
  // typePattern,
  // parents,
  // false
  // )
  // )
  // );
  // return true;
  // } else {
  // reportError("@DeclareImplements: can only be used on field whose type is an interface",
  // struct);
  // return false;
  // }
  // }
  // }
  // return false;
  // }

  /**
   * Read @DeclareParents
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleDeclareParentsAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeFieldStruct struct) {// ,
    // ResolvedPointcutDefinition
    // preResolvedPointcut)
    // {
    AnnotationGen decp = getAnnotation(runtimeAnnotations, AjcMemberMaker.DECLAREPARENTS_ANNOTATION);
    if (decp != null) {
      NameValuePair decpPatternNVP = getAnnotationElement(decp, VALUE);
      String decpPattern = decpPatternNVP.getValue().stringifyValue();
      if (decpPattern != null) {
        TypePattern typePattern = parseTypePattern(decpPattern, struct);
        ResolvedType fieldType = UnresolvedType.forSignature(struct.field.getSignature()).resolve(
            struct.enclosingType.getWorld());
        if (fieldType.isInterface()) {
          TypePattern parent = parseTypePattern(fieldType.getName(), struct);
          FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
          IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);
          // first add the declare implements like
          List<TypePattern> parents = new ArrayList<TypePattern>(1);
          parents.add(parent);
          DeclareParents dp = new DeclareParents(typePattern, parents, false);
          dp.resolve(binding); // resolves the parent and child parts
          // of the decp

          // resolve this so that we can use it for the
          // MethodDelegateMungers below.
          // eg. '@Coloured *' will change from a WildTypePattern to
          // an 'AnyWithAnnotationTypePattern' after this
          // resolution
          typePattern = typePattern.resolveBindings(binding, Bindings.NONE, false, false);
          // TODO kick ISourceLocation sl =
          // struct.bField.getSourceLocation(); ??
          // dp.setLocation(dp.getDeclaringType().getSourceContext(),
          // dp.getDeclaringType().getSourceLocation().getOffset(),
          // dp.getDeclaringType().getSourceLocation().getOffset());
          dp.setLocation(struct.context, -1, -1); // not ideal...
          struct.ajAttributes.add(new AjAttribute.DeclareAttribute(dp));

          // do we have a defaultImpl=xxx.class (ie implementation)
          String defaultImplClassName = null;
          NameValuePair defaultImplNVP = getAnnotationElement(decp, "defaultImpl");
          if (defaultImplNVP != null) {
            ClassElementValue defaultImpl = (ClassElementValue) defaultImplNVP.getValue();
            defaultImplClassName = UnresolvedType.forSignature(defaultImpl.getClassString()).getName();
            if (defaultImplClassName.equals("org.aspectj.lang.annotation.DeclareParents")) {
              defaultImplClassName = null;
            } else {
              // check public no arg ctor
              ResolvedType impl = struct.enclosingType.getWorld().resolve(defaultImplClassName, false);
              ResolvedMember[] mm = impl.getDeclaredMethods();
              int implModifiers = impl.getModifiers();
              boolean defaultVisibilityImpl = !(Modifier.isPrivate(implModifiers)
                  || Modifier.isProtected(implModifiers) || Modifier.isPublic(implModifiers));
              boolean hasNoCtorOrANoArgOne = true;
              ResolvedMember foundOneOfIncorrectVisibility = null;
              for (int i = 0; i < mm.length; i++) {
                ResolvedMember resolvedMember = mm[i];
                if (resolvedMember.getName().equals("<init>")) {
                  hasNoCtorOrANoArgOne = false;

                  if (resolvedMember.getParameterTypes().length == 0) {
                    if (defaultVisibilityImpl) { // default
                      // visibility
                      // implementation
                      if (resolvedMember.isPublic() || resolvedMember.isDefault()) {
                        hasNoCtorOrANoArgOne = true;
                      } else {
                        foundOneOfIncorrectVisibility = resolvedMember;
                      }
                    } else if (Modifier.isPublic(implModifiers)) { // public
                      // implementation
                      if (resolvedMember.isPublic()) {
                        hasNoCtorOrANoArgOne = true;
                      } else {
                        foundOneOfIncorrectVisibility = resolvedMember;
                      }
                    }
                  }
                }
                if (hasNoCtorOrANoArgOne) {
                  break;
                }
              }
              if (!hasNoCtorOrANoArgOne) {
                if (foundOneOfIncorrectVisibility != null) {
                  reportError(
                      "@DeclareParents: defaultImpl=\""
                          + defaultImplClassName
                          + "\" has a no argument constructor, but it is of incorrect visibility.  It must be at least as visible as the type.",
                      struct);
                } else {
                  reportError("@DeclareParents: defaultImpl=\"" + defaultImplClassName
                      + "\" has no public no-arg constructor", struct);
                }
              }
              if (!fieldType.isAssignableFrom(impl)) {
                reportError("@DeclareParents: defaultImpl=\"" + defaultImplClassName
                    + "\" does not implement the interface '" + fieldType.toString() + "'", struct);
              }
            }

          }

          // then iterate on field interface hierarchy (not object)
          boolean hasAtLeastOneMethod = false;
          Iterator<ResolvedMember> methodIterator = fieldType.getMethodsIncludingIntertypeDeclarations(false, true);
          while (methodIterator.hasNext()) {
            ResolvedMember method = methodIterator.next();

            // ResolvedMember[] methods = fieldType.getMethodsWithoutIterator(true, false, false).toArray(
            // new ResolvedMember[0]);
            // for (int i = 0; i < methods.length; i++) {
            // ResolvedMember method = methods[i];
            if (method.isAbstract()) {
              // moved to be detected at weave time if the target
              // doesnt implement the methods
              // if (defaultImplClassName == null) {
              // // non marker interface with no default impl
              // provided
              // reportError("@DeclareParents: used with a non marker interface and no defaultImpl=\"...\" provided",
              // struct);
              // return false;
              // }
              hasAtLeastOneMethod = true;
              // What we are saying here:
              // We have this method 'method' and we want to put a
              // forwarding method into a type that matches
              // typePattern that should delegate to the version
              // of the method in 'defaultImplClassName'

              // Now the method may be from a supertype but the
              // declaring type of the method we pass into the
              // type
              // munger is what is used to determine the type of
              // the field that hosts the delegate instance.
              // So here we create a modified method with an
              // alternative declaring type so that we lookup
              // the right field. See pr164016.
              MethodDelegateTypeMunger mdtm = new MethodDelegateTypeMunger(method, struct.enclosingType,
                  defaultImplClassName, typePattern);
              mdtm.setFieldType(fieldType);
              mdtm.setSourceLocation(struct.enclosingType.getSourceLocation());
              struct.ajAttributes.add(new AjAttribute.TypeMunger(mdtm));
            }
          }
          // successfull so far, we thus need a bcel type munger to
          // have
          // a field hosting the mixin in the target type
          if (hasAtLeastOneMethod && defaultImplClassName != null) {
            ResolvedMember fieldHost = AjcMemberMaker.itdAtDeclareParentsField(null, fieldType, struct.enclosingType);
            struct.ajAttributes.add(new AjAttribute.TypeMunger(new MethodDelegateTypeMunger.FieldHostTypeMunger(
                fieldHost, struct.enclosingType, typePattern)));
          }

          return true;
        } else {
          reportError("@DeclareParents: can only be used on a field whose type is an interface", struct);
          return false;
        }
      }
    }
    return false;
  }

  /**
   * Return a nicely formatted method string, for example: int X.foo(java.lang.String)
   */
  public static String getMethodForMessage(AjAttributeMethodStruct methodstructure) {
    StringBuffer sb = new StringBuffer();
    sb.append("Method '");
    sb.append(methodstructure.method.getReturnType().toString());
    sb.append(" ").append(methodstructure.enclosingType).append(".").append(methodstructure.method.getName());
    sb.append("(");
    Type[] args = methodstructure.method.getArgumentTypes();
    if (args != null) {
      for (int t = 0; t < args.length; t++) {
        if (t > 0) {
          sb.append(",");
        }
        sb.append(args[t].toString());
      }
    }
    sb.append(")'");
    return sb.toString();
  }

  /**
   * Process any @DeclareMixin annotation.
   *
   * Example Declaration <br>
   *
   * @DeclareMixin("Foo+") public I createImpl(Object o) { return new Impl(o); }
   *
   * <br>
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleDeclareMixinAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeMethodStruct struct) {
    AnnotationGen declareMixinAnnotation = getAnnotation(runtimeAnnotations, AjcMemberMaker.DECLAREMIXIN_ANNOTATION);
    if (declareMixinAnnotation == null) {
      // No annotation found
      return false;
    }

    Method annotatedMethod = struct.method;
    World world = struct.enclosingType.getWorld();
    NameValuePair declareMixinPatternNameValuePair = getAnnotationElement(declareMixinAnnotation, VALUE);

    // declareMixinPattern could be of the form "Bar*" or "A || B" or "Foo+"
    String declareMixinPattern = declareMixinPatternNameValuePair.getValue().stringifyValue();
    TypePattern targetTypePattern = parseTypePattern(declareMixinPattern, struct);

    // Return value of the annotated method is the interface or class that the mixin delegate should have
    ResolvedType methodReturnType = UnresolvedType.forSignature(annotatedMethod.getReturnType().getSignature()).resolve(world);

    if (methodReturnType.isPrimitiveType()) {
      reportError(getMethodForMessage(struct) + ":  factory methods for a mixin cannot return void or a primitive type",
          struct);
      return false;
    }

    if (annotatedMethod.getArgumentTypes().length > 1) {
      reportError(getMethodForMessage(struct) + ": factory methods for a mixin can take a maximum of one parameter", struct);
      return false;
    }

    // The set of interfaces to be mixed in is either:
    // supplied as a list in the 'Class[] interfaces' value in the annotation value
    // supplied as just the interface return value of the annotated method
    // supplied as just the class return value of the annotated method
    NameValuePair interfaceListSpecified = getAnnotationElement(declareMixinAnnotation, "interfaces");

    List<TypePattern> newParents = new ArrayList<TypePattern>(1);
    List<ResolvedType> newInterfaceTypes = new ArrayList<ResolvedType>(1);
    if (interfaceListSpecified != null) {
      ArrayElementValue arrayOfInterfaceTypes = (ArrayElementValue) interfaceListSpecified.getValue();
      int numberOfTypes = arrayOfInterfaceTypes.getElementValuesArraySize();
      ElementValue[] theTypes = arrayOfInterfaceTypes.getElementValuesArray();
      for (int i = 0; i < numberOfTypes; i++) {
        ClassElementValue interfaceType = (ClassElementValue) theTypes[i];
        // Check: needs to be resolvable
        // TODO crappy replace required
        ResolvedType ajInterfaceType = UnresolvedType.forSignature(interfaceType.getClassString().replace("/", "."))
            .resolve(world);
        if (ajInterfaceType.isMissing() || !ajInterfaceType.isInterface()) {
          reportError(
              "Types listed in the 'interfaces' DeclareMixin annotation value must be valid interfaces. This is invalid: "
                  + ajInterfaceType.getName(), struct); // TODO better error location, use the method position
          return false;
        }
        if (!ajInterfaceType.isAssignableFrom(methodReturnType)) {
          reportError(getMethodForMessage(struct) + ": factory method does not return something that implements '"
              + ajInterfaceType.getName() + "'", struct);
          return false;
        }
        newInterfaceTypes.add(ajInterfaceType);
        // Checking that it is a superinterface of the methods return value is done at weave time
        TypePattern newParent = parseTypePattern(ajInterfaceType.getName(), struct);
        newParents.add(newParent);
      }
    } else {
      if (methodReturnType.isClass()) {
        reportError(
            getMethodForMessage(struct)
                + ": factory methods for a mixin must either return an interface type or specify interfaces in the annotation and return a class",
            struct);
        return false;
      }
      // Use the method return type: this might be a class or an interface
      TypePattern newParent = parseTypePattern(methodReturnType.getName(), struct);
      newInterfaceTypes.add(methodReturnType);
      newParents.add(newParent);
    }
    if (newParents.size() == 0) {
      // Warning: did they foolishly put @DeclareMixin(value="Bar+",interfaces={})
      // TODO output warning
      return false;
    }

    // Create the declare parents that will add the interfaces to matching targets
    FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
    IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);
    // how do we mark this as a decp due to decmixin?
    DeclareParents dp = new DeclareParentsMixin(targetTypePattern, newParents);
    dp.resolve(binding);
    targetTypePattern = dp.getChild();

    dp.setLocation(struct.context, -1, -1); // not ideal...
    struct.ajAttributes.add(new AjAttribute.DeclareAttribute(dp));

    // The factory method for building the implementation is the
    // one attached to the annotation:
    // Method implementationFactory = struct.method;

    boolean hasAtLeastOneMethod = false;

    for (Iterator<ResolvedType> iterator = newInterfaceTypes.iterator(); iterator.hasNext();) {
      ResolvedType typeForDelegation = iterator.next();
      // TODO check for overlapping interfaces. Eg. A implements I, I extends J - if they specify interfaces={I,J} we dont
      // want to do any methods twice
      ResolvedMember[] methods = typeForDelegation.getMethodsWithoutIterator(true, false, false).toArray(
          new ResolvedMember[0]);
      for (int i = 0; i < methods.length; i++) {
        ResolvedMember method = methods[i];
        if (method.isAbstract()) {
          hasAtLeastOneMethod = true;
          if (method.hasBackingGenericMember()) {
            method = method.getBackingGenericMember();
          }
          MethodDelegateTypeMunger mdtm = new MethodDelegateTypeMunger(method, struct.enclosingType, "",
              targetTypePattern, struct.method.getName(), struct.method.getSignature());
          mdtm.setFieldType(methodReturnType);
          mdtm.setSourceLocation(struct.enclosingType.getSourceLocation());
          struct.ajAttributes.add(new AjAttribute.TypeMunger(mdtm));
        }
      }
    }
    // if any method delegate was created then a field to hold the delegate instance must also be added
    if (hasAtLeastOneMethod) {
      ResolvedMember fieldHost = AjcMemberMaker.itdAtDeclareParentsField(null, methodReturnType, struct.enclosingType);
      struct.ajAttributes.add(new AjAttribute.TypeMunger(new MethodDelegateTypeMunger.FieldHostTypeMunger(fieldHost,
          struct.enclosingType, targetTypePattern)));
    }
    return true;
  }

  /**
   * Read @Before
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleBeforeAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeMethodStruct struct,
      ResolvedPointcutDefinition preResolvedPointcut) {
    AnnotationGen before = getAnnotation(runtimeAnnotations, AjcMemberMaker.BEFORE_ANNOTATION);
    if (before != null) {
      NameValuePair beforeAdvice = getAnnotationElement(before, VALUE);
      if (beforeAdvice != null) {
        // this/target/args binding
        String argumentNames = getArgNamesValue(before);
        if (argumentNames != null) {
          struct.unparsedArgumentNames = argumentNames;
        }
        FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
        try {
          bindings = extractBindings(struct);
        } catch (UnreadableDebugInfoException unreadableDebugInfoException) {
          return false;
        }
        IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);

        // joinpoint, staticJoinpoint binding
        int extraArgument = extractExtraArgument(struct.method);

        Pointcut pc = null;
        if (preResolvedPointcut != null) {
          pc = preResolvedPointcut.getPointcut();
          // pc.resolve(binding);
        } else {
          pc = parsePointcut(beforeAdvice.getValue().stringifyValue(), struct, false);
          if (pc == null) {
            return false;// parse error
          }
          pc = pc.resolve(binding);
        }
        setIgnoreUnboundBindingNames(pc, bindings);

        ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
            struct.bMethod.getDeclarationOffset());
        struct.ajAttributes.add(new AjAttribute.AdviceAttribute(AdviceKind.Before, pc, extraArgument, sl.getOffset(), sl
            .getOffset() + 1,// FIXME AVASM
            struct.context));
        return true;
      }
    }
    return false;
  }

  /**
   * Read @After
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleAfterAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeMethodStruct struct,
      ResolvedPointcutDefinition preResolvedPointcut) {
    AnnotationGen after = getAnnotation(runtimeAnnotations, AjcMemberMaker.AFTER_ANNOTATION);
    if (after != null) {
      NameValuePair afterAdvice = getAnnotationElement(after, VALUE);
      if (afterAdvice != null) {
        // this/target/args binding
        FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
        String argumentNames = getArgNamesValue(after);
        if (argumentNames != null) {
          struct.unparsedArgumentNames = argumentNames;
        }
        try {
          bindings = extractBindings(struct);
        } catch (UnreadableDebugInfoException unreadableDebugInfoException) {
          return false;
        }
        IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);

        // joinpoint, staticJoinpoint binding
        int extraArgument = extractExtraArgument(struct.method);

        Pointcut pc = null;
        if (preResolvedPointcut != null) {
          pc = preResolvedPointcut.getPointcut();
        } else {
          pc = parsePointcut(afterAdvice.getValue().stringifyValue(), struct, false);
          if (pc == null) {
            return false;// parse error
          }
          pc.resolve(binding);
        }
        setIgnoreUnboundBindingNames(pc, bindings);

        ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
            struct.bMethod.getDeclarationOffset());
        struct.ajAttributes.add(new AjAttribute.AdviceAttribute(AdviceKind.After, pc, extraArgument, sl.getOffset(), sl
            .getOffset() + 1,// FIXME AVASM
            struct.context));
        return true;
      }
    }
    return false;
  }

  /**
   * Read @AfterReturning
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleAfterReturningAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeMethodStruct struct,
      ResolvedPointcutDefinition preResolvedPointcut, BcelMethod owningMethod)
      throws ReturningFormalNotDeclaredInAdviceSignatureException {
    AnnotationGen after = getAnnotation(runtimeAnnotations, AjcMemberMaker.AFTERRETURNING_ANNOTATION);
    if (after != null) {
      NameValuePair annValue = getAnnotationElement(after, VALUE);
      NameValuePair annPointcut = getAnnotationElement(after, POINTCUT);
      NameValuePair annReturned = getAnnotationElement(after, RETURNING);

      // extract the pointcut and returned type/binding - do some checks
      String pointcut = null;
      String returned = null;
      if ((annValue != null && annPointcut != null) || (annValue == null && annPointcut == null)) {
        reportError("@AfterReturning: either 'value' or 'poincut' must be provided, not both", struct);
        return false;
      }
      if (annValue != null) {
        pointcut = annValue.getValue().stringifyValue();
      } else {
        pointcut = annPointcut.getValue().stringifyValue();
      }
      if (isNullOrEmpty(pointcut)) {
        reportError("@AfterReturning: either 'value' or 'poincut' must be provided, not both", struct);
        return false;
      }
      if (annReturned != null) {
        returned = annReturned.getValue().stringifyValue();
        if (isNullOrEmpty(returned)) {
          returned = null;
        } else {
          // check that thrownFormal exists as the last parameter in
          // the advice
          String[] pNames = owningMethod.getParameterNames();
          if (pNames == null || pNames.length == 0 || !Arrays.asList(pNames).contains(returned)) {
            throw new ReturningFormalNotDeclaredInAdviceSignatureException(returned);
          }
        }
      }
      String argumentNames = getArgNamesValue(after);
      if (argumentNames != null) {
        struct.unparsedArgumentNames = argumentNames;
      }
      // this/target/args binding
      // exclude the return binding from the pointcut binding since it is
      // an extraArg binding
      FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
      try {
        bindings = (returned == null ? extractBindings(struct) : extractBindings(struct, returned));
      } catch (UnreadableDebugInfoException unreadableDebugInfoException) {
        return false;
      }
      IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);

      // joinpoint, staticJoinpoint binding
      int extraArgument = extractExtraArgument(struct.method);

      // return binding
      if (returned != null) {
        extraArgument |= Advice.ExtraArgument;
      }

      Pointcut pc = null;
      if (preResolvedPointcut != null) {
        pc = preResolvedPointcut.getPointcut();
      } else {
        pc = parsePointcut(pointcut, struct, false);
        if (pc == null) {
          return false;// parse error
        }
        pc.resolve(binding);
      }
      setIgnoreUnboundBindingNames(pc, bindings);

      ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
          struct.bMethod.getDeclarationOffset());
      struct.ajAttributes.add(new AjAttribute.AdviceAttribute(AdviceKind.AfterReturning, pc, extraArgument, sl.getOffset(),
          sl.getOffset() + 1,// FIXME AVASM
          struct.context));
      return true;
    }
    return false;
  }

  /**
   * Read @AfterThrowing
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleAfterThrowingAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeMethodStruct struct,
      ResolvedPointcutDefinition preResolvedPointcut, BcelMethod owningMethod)
      throws ThrownFormalNotDeclaredInAdviceSignatureException {
    AnnotationGen after = getAnnotation(runtimeAnnotations, AjcMemberMaker.AFTERTHROWING_ANNOTATION);
    if (after != null) {
      NameValuePair annValue = getAnnotationElement(after, VALUE);
      NameValuePair annPointcut = getAnnotationElement(after, POINTCUT);
      NameValuePair annThrown = getAnnotationElement(after, THROWING);

      // extract the pointcut and throwned type/binding - do some checks
      String pointcut = null;
      String thrownFormal = null;
      if ((annValue != null && annPointcut != null) || (annValue == null && annPointcut == null)) {
        reportError("@AfterThrowing: either 'value' or 'poincut' must be provided, not both", struct);
        return false;
      }
      if (annValue != null) {
        pointcut = annValue.getValue().stringifyValue();
      } else {
        pointcut = annPointcut.getValue().stringifyValue();
      }
      if (isNullOrEmpty(pointcut)) {
        reportError("@AfterThrowing: either 'value' or 'poincut' must be provided, not both", struct);
        return false;
      }
      if (annThrown != null) {
        thrownFormal = annThrown.getValue().stringifyValue();
        if (isNullOrEmpty(thrownFormal)) {
          thrownFormal = null;
        } else {
          // check that thrownFormal exists as the last parameter in
          // the advice
          String[] pNames = owningMethod.getParameterNames();
          if (pNames == null || pNames.length == 0 || !Arrays.asList(pNames).contains(thrownFormal)) {
            throw new ThrownFormalNotDeclaredInAdviceSignatureException(thrownFormal);
          }
        }
      }
      String argumentNames = getArgNamesValue(after);
      if (argumentNames != null) {
        struct.unparsedArgumentNames = argumentNames;
      }
      // this/target/args binding
      // exclude the throwned binding from the pointcut binding since it
      // is an extraArg binding
      FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
      try {
        bindings = (thrownFormal == null ? extractBindings(struct) : extractBindings(struct, thrownFormal));
      } catch (UnreadableDebugInfoException unreadableDebugInfoException) {
        return false;
      }
      IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);

      // joinpoint, staticJoinpoint binding
      int extraArgument = extractExtraArgument(struct.method);

      // return binding
      if (thrownFormal != null) {
        extraArgument |= Advice.ExtraArgument;
      }

      Pointcut pc = null;
      if (preResolvedPointcut != null) {
        pc = preResolvedPointcut.getPointcut();
      } else {
        pc = parsePointcut(pointcut, struct, false);
        if (pc == null) {
          return false;// parse error
        }
        pc.resolve(binding);
      }
      setIgnoreUnboundBindingNames(pc, bindings);

      ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
          struct.bMethod.getDeclarationOffset());
      struct.ajAttributes.add(new AjAttribute.AdviceAttribute(AdviceKind.AfterThrowing, pc, extraArgument, sl.getOffset(), sl
          .getOffset() + 1, struct.context));
      return true;
    }
    return false;
  }

  /**
   * Read @Around
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleAroundAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeMethodStruct struct,
      ResolvedPointcutDefinition preResolvedPointcut) {
    AnnotationGen around = getAnnotation(runtimeAnnotations, AjcMemberMaker.AROUND_ANNOTATION);
    if (around != null) {
      NameValuePair aroundAdvice = getAnnotationElement(around, VALUE);
      if (aroundAdvice != null) {
        // this/target/args binding
        String argumentNames = getArgNamesValue(around);
        if (argumentNames != null) {
          struct.unparsedArgumentNames = argumentNames;
        }
        FormalBinding[] bindings = new org.aspectj.weaver.patterns.FormalBinding[0];
        try {
          bindings = extractBindings(struct);
        } catch (UnreadableDebugInfoException unreadableDebugInfoException) {
          return false;
        }
        IScope binding = new BindingScope(struct.enclosingType, struct.context, bindings);

        // joinpoint, staticJoinpoint binding
        int extraArgument = extractExtraArgument(struct.method);

        Pointcut pc = null;
        if (preResolvedPointcut != null) {
          pc = preResolvedPointcut.getPointcut();
        } else {
          pc = parsePointcut(aroundAdvice.getValue().stringifyValue(), struct, false);
          if (pc == null) {
            return false;// parse error
          }
          pc.resolve(binding);
        }
        setIgnoreUnboundBindingNames(pc, bindings);

        ISourceLocation sl = struct.context.makeSourceLocation(struct.bMethod.getDeclarationLineNumber(),
            struct.bMethod.getDeclarationOffset());
        struct.ajAttributes.add(new AjAttribute.AdviceAttribute(AdviceKind.Around, pc, extraArgument, sl.getOffset(), sl
            .getOffset() + 1,// FIXME AVASM
            struct.context));
        return true;
      }
    }
    return false;
  }

  /**
   * Read @Pointcut and handle the resolving in a lazy way to deal with pointcut references
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if a pointcut was handled
   */
  private static boolean handlePointcutAnnotation(RuntimeAnnos runtimeAnnotations, AjAttributeMethodStruct struct) {
    AnnotationGen pointcut = getAnnotation(runtimeAnnotations, AjcMemberMaker.POINTCUT_ANNOTATION);
    if (pointcut == null) {
      return false;
    }
    NameValuePair pointcutExpr = getAnnotationElement(pointcut, VALUE);

    // semantic check: the method must return void, or be
    // "public static boolean" for if() support
    if (!(Type.VOID.equals(struct.method.getReturnType()) || (Type.BOOLEAN.equals(struct.method.getReturnType())
        && struct.method.isStatic() && struct.method.isPublic()))) {
      reportWarning("Found @Pointcut on a method not returning 'void' or not 'public static boolean'", struct);
      // no need to stop
    }

    // semantic check: the method must not throw anything
    if (struct.method.getExceptionTable() != null) {
      reportWarning("Found @Pointcut on a method throwing exception", struct);
      // no need to stop
    }

    String argumentNames = getArgNamesValue(pointcut);
    if (argumentNames != null) {
      struct.unparsedArgumentNames = argumentNames;
    }
    // this/target/args binding
    final IScope binding;
    try {
      if (struct.method.isAbstract()) {
        binding = null;
      } else {
        binding = new BindingScope(struct.enclosingType, struct.context, extractBindings(struct));
      }
    } catch (UnreadableDebugInfoException e) {
      return false;
    }

    UnresolvedType[] argumentTypes = new UnresolvedType[struct.method.getArgumentTypes().length];
    for (int i = 0; i < argumentTypes.length; i++) {
      argumentTypes[i] = UnresolvedType.forSignature(struct.method.getArgumentTypes()[i].getSignature());
    }

    Pointcut pc = null;
    if (struct.method.isAbstract()) {
      if ((pointcutExpr != null && isNullOrEmpty(pointcutExpr.getValue().stringifyValue())) || pointcutExpr == null) {
        // abstract pointcut
        // leave pc = null
      } else {
        reportError("Found defined @Pointcut on an abstract method", struct);
        return false;// stop
      }
    } else {
      if (pointcutExpr == null || isNullOrEmpty(pointcutExpr.getValue().stringifyValue())) {
        // the matches nothing pointcut (125475/125480) - perhaps not as
        // cleanly supported as it could be.
      } else {
        // if (pointcutExpr != null) {
        // use a LazyResolvedPointcutDefinition so that the pointcut is
        // resolved lazily
        // since for it to be resolved, we will need other pointcuts to
        // be registered as well
        pc = parsePointcut(pointcutExpr.getValue().stringifyValue(), struct, true);
        if (pc == null) {
          return false;// parse error
        }
        pc.setLocation(struct.context, -1, -1);// FIXME AVASM !! bMethod
        // is null here..
        // } else {
        // reportError("Found undefined @Pointcut on a non-abstract method",
        // struct);
        // return false;
        // }
      }
    }
    // do not resolve binding now but lazily
    struct.ajAttributes.add(new AjAttribute.PointcutDeclarationAttribute(new LazyResolvedPointcutDefinition(
        struct.enclosingType, struct.method.getModifiers(), struct.method.getName(), argumentTypes, UnresolvedType
            .forSignature(struct.method.getReturnType().getSignature()), pc,// can
        // be
        // null
        // for
        // abstract
        // pointcut
        binding // can be null for abstract pointcut
        )));
    return true;
  }

  /**
   * Read @DeclareError, @DeclareWarning
   *
   * @param runtimeAnnotations
   * @param struct
   * @return true if found
   */
  private static boolean handleDeclareErrorOrWarningAnnotation(AsmManager model, RuntimeAnnos runtimeAnnotations,
      AjAttributeFieldStruct struct) {
    AnnotationGen error = getAnnotation(runtimeAnnotations, AjcMemberMaker.DECLAREERROR_ANNOTATION);
    boolean hasError = false;
    if (error != null) {
      NameValuePair declareError = getAnnotationElement(error, VALUE);
      if (declareError != null) {
        if (!STRING_DESC.equals(struct.field.getSignature()) || struct.field.getConstantValue() == null) {
          reportError("@DeclareError used on a non String constant field", struct);
          return false;
        }
        Pointcut pc = parsePointcut(declareError.getValue().stringifyValue(), struct, false);
        if (pc == null) {
          hasError = false;// cannot parse pointcut
        } else {
          DeclareErrorOrWarning deow = new DeclareErrorOrWarning(true, pc, struct.field.getConstantValue().toString());
          setDeclareErrorOrWarningLocation(model, deow, struct);
          struct.ajAttributes.add(new AjAttribute.DeclareAttribute(deow));
          hasError = true;
        }
      }
    }
    AnnotationGen warning = getAnnotation(runtimeAnnotations, AjcMemberMaker.DECLAREWARNING_ANNOTATION);
    boolean hasWarning = false;
    if (warning != null) {
      NameValuePair declareWarning = getAnnotationElement(warning, VALUE);
      if (declareWarning != null) {
        if (!STRING_DESC.equals(struct.field.getSignature()) || struct.field.getConstantValue() == null) {
          reportError("@DeclareWarning used on a non String constant field", struct);
          return false;
        }
        Pointcut pc = parsePointcut(declareWarning.getValue().stringifyValue(), struct, false);
        if (pc == null) {
          hasWarning = false;// cannot parse pointcut
        } else {
          DeclareErrorOrWarning deow = new DeclareErrorOrWarning(false, pc, struct.field.getConstantValue().toString());
          setDeclareErrorOrWarningLocation(model, deow, struct);
          struct.ajAttributes.add(new AjAttribute.DeclareAttribute(deow));
          return hasWarning = true;
        }
      }
    }
    return hasError || hasWarning;
  }

  /**
   * Sets the location for the declare error / warning using the corresponding IProgramElement in the structure model. This will
   * only fix bug 120356 if compiled with -emacssym, however, it does mean that the cross references view in AJDT will show the
   * correct information.
   *
   * Other possibilities for fix: 1. using the information in ajcDeclareSoft (if this is set correctly) which will fix the problem
   * if compiled with ajc but not if compiled with javac. 2. creating an AjAttribute called FieldDeclarationLineNumberAttribute
   * (much like MethodDeclarationLineNumberAttribute) which we can ask for the offset. This will again only fix bug 120356 when
   * compiled with ajc.
   *
   * @param deow
   * @param struct
   */
  private static void setDeclareErrorOrWarningLocation(AsmManager model, DeclareErrorOrWarning deow, AjAttributeFieldStruct struct) {
    IHierarchy top = (model == null ? null : model.getHierarchy());
    if (top != null && top.getRoot() != null) {
      IProgramElement ipe = top.findElementForLabel(top.getRoot(), IProgramElement.Kind.FIELD, struct.field.getName());
      if (ipe != null && ipe.getSourceLocation() != null) {
        ISourceLocation sourceLocation = ipe.getSourceLocation();
        int start = sourceLocation.getOffset();
        int end = start + struct.field.getName().length();
        deow.setLocation(struct.context, start, end);
        return;
      }
    }
    deow.setLocation(struct.context, -1, -1);
  }

  /**
   * Returns a readable representation of a method. Method.toString() is not suitable.
   *
   * @param method
   * @return a readable representation of a method
   */
  private static String methodToString(Method method) {
    StringBuffer sb = new StringBuffer();
    sb.append(method.getName());
    sb.append(method.getSignature());
    return sb.toString();
  }

  /**
   * Build the bindings for a given method (pointcut / advice)
   *
   * @param struct
   * @return null if no debug info is available
   */
  private static FormalBinding[] extractBindings(AjAttributeMethodStruct struct) throws UnreadableDebugInfoException {
    Method method = struct.method;
    String[] argumentNames = struct.getArgumentNames();

    // assert debug info was here
    if (argumentNames.length != method.getArgumentTypes().length) {
      reportError(
          "Cannot read debug info for @Aspect to handle formal binding in pointcuts (please compile with 'javac -g' or '<javac debug='true'.../>' in Ant)",
          struct);
      throw new UnreadableDebugInfoException();
    }

    List<FormalBinding> bindings = new ArrayList<FormalBinding>();
    for (int i = 0; i < argumentNames.length; i++) {
      String argumentName = argumentNames[i];
      UnresolvedType argumentType = UnresolvedType.forSignature(method.getArgumentTypes()[i].getSignature());

      // do not bind JoinPoint / StaticJoinPoint /
      // EnclosingStaticJoinPoint
      // TODO solve me : this means that the JP/SJP/ESJP cannot appear as
      // binding
      // f.e. when applying advice on advice etc
      if ((AjcMemberMaker.TYPEX_JOINPOINT.equals(argumentType)
          || AjcMemberMaker.TYPEX_PROCEEDINGJOINPOINT.equals(argumentType)
          || AjcMemberMaker.TYPEX_STATICJOINPOINT.equals(argumentType)
          || AjcMemberMaker.TYPEX_ENCLOSINGSTATICJOINPOINT.equals(argumentType) || AjcMemberMaker.AROUND_CLOSURE_TYPE
          .equals(argumentType))) {
        // continue;// skip
        bindings.add(new FormalBinding.ImplicitFormalBinding(argumentType, argumentName, i));
      } else {
        bindings.add(new FormalBinding(argumentType, argumentName, i));
      }
    }

    return bindings.toArray(new FormalBinding[] {});
  }

  // FIXME alex deal with exclude index
  private static FormalBinding[] extractBindings(AjAttributeMethodStruct struct, String excludeFormal)
      throws UnreadableDebugInfoException {
    FormalBinding[] bindings = extractBindings(struct);
    // int excludeIndex = -1;
    for (int i = 0; i < bindings.length; i++) {
      FormalBinding binding = bindings[i];
      if (binding.getName().equals(excludeFormal)) {
        // excludeIndex = i;
        bindings[i] = new FormalBinding.ImplicitFormalBinding(binding.getType(), binding.getName(), binding.getIndex());
        break;
      }
    }
    return bindings;
    //
    // if (excludeIndex >= 0) {
    // FormalBinding[] bindingsFiltered = new
    // FormalBinding[bindings.length-1];
    // int k = 0;
    // for (int i = 0; i < bindings.length; i++) {
    // if (i == excludeIndex) {
    // ;
    // } else {
    // bindingsFiltered[k] = new FormalBinding(bindings[i].getType(),
    // bindings[i].getName(), k);
    // k++;
    // }
    // }
    // return bindingsFiltered;
    // } else {
    // return bindings;
    // }
  }

  /**
   * Compute the flag for the xxxJoinPoint extra argument
   *
   * @param method
   * @return extra arg flag
   */
  private static int extractExtraArgument(Method method) {
    Type[] methodArgs = method.getArgumentTypes();
    String[] sigs = new String[methodArgs.length];
    for (int i = 0; i < methodArgs.length; i++) {
      sigs[i] = methodArgs[i].getSignature();
    }
    return extractExtraArgument(sigs);
  }

  /**
   * Compute the flag for the xxxJoinPoint extra argument
   *
   * @param argumentSignatures
   * @return extra arg flag
   */
  public static int extractExtraArgument(String[] argumentSignatures) {
    int extraArgument = 0;
    for (int i = 0; i < argumentSignatures.length; i++) {
      if (AjcMemberMaker.TYPEX_JOINPOINT.getSignature().equals(argumentSignatures[i])) {
        extraArgument |= Advice.ThisJoinPoint;
      } else if (AjcMemberMaker.TYPEX_PROCEEDINGJOINPOINT.getSignature().equals(argumentSignatures[i])) {
        extraArgument |= Advice.ThisJoinPoint;
      } else if (AjcMemberMaker.TYPEX_STATICJOINPOINT.getSignature().equals(argumentSignatures[i])) {
        extraArgument |= Advice.ThisJoinPointStaticPart;
      } else if (AjcMemberMaker.TYPEX_ENCLOSINGSTATICJOINPOINT.getSignature().equals(argumentSignatures[i])) {
        extraArgument |= Advice.ThisEnclosingJoinPointStaticPart;
      }
    }
    return extraArgument;
  }

  /**
   * Returns the runtime (RV/RIV) annotation of type annotationType or null if no such annotation
   *
   * @param rvs
   * @param annotationType
   * @return annotation
   */
  private static AnnotationGen getAnnotation(RuntimeAnnos rvs, UnresolvedType annotationType) {
    final String annotationTypeName = annotationType.getName();
    for (AnnotationGen rv : rvs.getAnnotations()) {
      if (annotationTypeName.equals(rv.getTypeName())) {
        return rv;
      }
    }
    return null;
  }

  /**
   * Returns the value of a given element of an annotation or null if not found Caution: Does not handles default value.
   *
   * @param annotation
   * @param elementName
   * @return annotation NVP
   */
  private static NameValuePair getAnnotationElement(AnnotationGen annotation, String elementName) {
    for (NameValuePair element : annotation.getValues()) {
      if (elementName.equals(element.getNameString())) {
        return element;
      }
    }
    return null;
  }

  /**
   * Return the argNames set for an annotation or null if it is not specified.
   */
  private static String getArgNamesValue(AnnotationGen anno) {
    List<NameValuePair> elements = anno.getValues();
    for (NameValuePair element : elements) {
      if (ARGNAMES.equals(element.getNameString())) {
        return element.getValue().stringifyValue();
      }
    }
    return null;
  }

  private static String lastbit(String fqname) {
    int i = fqname.lastIndexOf(".");
    if (i == -1) {
      return fqname;
    } else {
      return fqname.substring(i + 1);
    }
  }

  /**
   * Extract the method argument names. First we try the debug info attached to the method (the LocalVariableTable) - if we cannot
   * find that we look to use the argNames value that may have been supplied on the associated annotation. If that fails we just
   * don't know and return an empty string.
   *
   * @param method
   * @param argNamesFromAnnotation
   * @param methodStruct
   * @return method argument names
   */
  private static String[] getMethodArgumentNames(Method method, String argNamesFromAnnotation,
      AjAttributeMethodStruct methodStruct) {
    if (method.getArgumentTypes().length == 0) {
      return EMPTY_STRINGS;
    }

    final int startAtStackIndex = method.isStatic() ? 0 : 1;
    final List<MethodArgument> arguments = new ArrayList<MethodArgument>();
    LocalVariableTable lt = method.getLocalVariableTable();
    if (lt != null) {
      LocalVariable[] lvt = lt.getLocalVariableTable();
      for (int j = 0; j < lvt.length; j++) {
        LocalVariable localVariable = lvt[j];
        if (localVariable.getStartPC() == 0) {
          if (localVariable.getIndex() >= startAtStackIndex) {
            arguments.add(new MethodArgument(localVariable.getName(), localVariable.getIndex()));
          }
        }
      }
      if (arguments.size() == 0) {
        // could be cobertura code where some extra bytecode has been stuffed in at the start of the method
        // but the local variable table hasn't been repaired - for example:
        // LocalVariable(start_pc = 6, length = 40, index = 0:com.example.ExampleAspect this)
        // LocalVariable(start_pc = 6, length = 40, index = 1:org.aspectj.lang.ProceedingJoinPoint pjp)
        // LocalVariable(start_pc = 6, length = 40, index = 2:int __cobertura__line__number__)
        // LocalVariable(start_pc = 6, length = 40, index = 3:int __cobertura__branch__number__)
        LocalVariable localVariable = lvt[0];
        if (localVariable.getStartPC() != 0) {
          // looks suspicious so let's use this information
          for (int j = 0; j < lvt.length && arguments.size() < method.getArgumentTypes().length; j++) {
            localVariable = lvt[j];
            if (localVariable.getIndex() >= startAtStackIndex) {
              arguments.add(new MethodArgument(localVariable.getName(), localVariable.getIndex()));
            }
          }
        }
      }
    } else {
      // No debug info, do we have an annotation value we can rely on?
      if (argNamesFromAnnotation != null) {
        StringTokenizer st = new StringTokenizer(argNamesFromAnnotation, " ,");
        List<String> args = new ArrayList<String>();
        while (st.hasMoreTokens()) {
          args.add(st.nextToken());
        }
        if (args.size() != method.getArgumentTypes().length) {
          StringBuffer shortString = new StringBuffer().append(lastbit(method.getReturnType().toString())).append(" ")
              .append(method.getName());
          if (method.getArgumentTypes().length > 0) {
            shortString.append("(");
            for (int i = 0; i < method.getArgumentTypes().length; i++) {
              shortString.append(lastbit(method.getArgumentTypes()[i].toString()));
              if ((i + 1) < method.getArgumentTypes().length) {
                shortString.append(",");
              }

            }
            shortString.append(")");
          }
          reportError("argNames annotation value does not specify the right number of argument names for the method '"
              + shortString.toString() + "'", methodStruct);
          return EMPTY_STRINGS;
        }
        return args.toArray(new String[] {});
      }
    }

    if (arguments.size() != method.getArgumentTypes().length) {
      return EMPTY_STRINGS;
    }

    // sort by index
    Collections.sort(arguments, new Comparator<MethodArgument>() {
      public int compare(MethodArgument mo, MethodArgument mo1) {
        if (mo.indexOnStack == mo1.indexOnStack) {
          return 0;
        } else if (mo.indexOnStack > mo1.indexOnStack) {
          return 1;
        } else {
          return -1;
        }
      }
    });
    String[] argumentNames = new String[arguments.size()];
    int i = 0;
    for (MethodArgument methodArgument : arguments) {
      argumentNames[i++] = methodArgument.name;
    }
    return argumentNames;
  }

  /**
   * A method argument, used for sorting by indexOnStack (ie order in signature)
   *
   * @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur</a>
   */
  private static class MethodArgument {
    String name;
    int indexOnStack;

    public MethodArgument(String name, int indexOnStack) {
      this.name = name;
      this.indexOnStack = indexOnStack;
    }
  }

  /**
   * LazyResolvedPointcutDefinition lazyly resolve the pointcut so that we have time to register all pointcut referenced before
   * pointcut resolution happens
   *
   * @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur</a>
   */
  public static class LazyResolvedPointcutDefinition extends ResolvedPointcutDefinition {
    private final Pointcut m_pointcutUnresolved; // null for abstract
    // pointcut
    private final IScope m_binding;

    private Pointcut m_lazyPointcut = null;

    public LazyResolvedPointcutDefinition(UnresolvedType declaringType, int modifiers, String name,
        UnresolvedType[] parameterTypes, UnresolvedType returnType, Pointcut pointcut, IScope binding) {
      super(declaringType, modifiers, name, parameterTypes, returnType, null);
      m_pointcutUnresolved = pointcut;
      m_binding = binding;
    }

    @Override
    public Pointcut getPointcut() {
      if (m_lazyPointcut == null && m_pointcutUnresolved == null) {
        m_lazyPointcut = Pointcut.makeMatchesNothing(Pointcut.CONCRETE);
      }
      if (m_lazyPointcut == null && m_pointcutUnresolved != null) {
        m_lazyPointcut = m_pointcutUnresolved.resolve(m_binding);
        m_lazyPointcut.copyLocationFrom(m_pointcutUnresolved);
      }
      return m_lazyPointcut;
    }
  }

  /**
   * Helper to test empty strings
   *
   * @param s
   * @return true if empty or null
   */
  private static boolean isNullOrEmpty(String s) {
    return (s == null || s.length() <= 0);
  }

  /**
   * Set the pointcut bindings for which to ignore unbound issues, so that we can implicitly bind xxxJoinPoint for @AJ advices
   *
   * @param pointcut
   * @param bindings
   */
  private static void setIgnoreUnboundBindingNames(Pointcut pointcut, FormalBinding[] bindings) {
    // register ImplicitBindings as to be ignored since unbound
    // TODO is it likely to fail in a bad way if f.e. this(jp) etc ?
    List<String> ignores = new ArrayList<String>();
    for (int i = 0; i < bindings.length; i++) {
      FormalBinding formalBinding = bindings[i];
      if (formalBinding instanceof FormalBinding.ImplicitFormalBinding) {
        ignores.add(formalBinding.getName());
      }
    }
    pointcut.m_ignoreUnboundBindingForNames = ignores.toArray(new String[ignores.size()]);
  }

  /**
   * A check exception when we cannot read debug info (needed for formal binding)
   */
  private static class UnreadableDebugInfoException extends Exception {
  }

  /**
   * Report an error
   *
   * @param message
   * @param location
   */
  private static void reportError(String message, AjAttributeStruct location) {
    if (!location.handler.isIgnoring(IMessage.ERROR)) {
      location.handler.handleMessage(new Message(message, location.enclosingType.getSourceLocation(), true));
    }
  }

  // private static void reportError(String message, IMessageHandler handler, ISourceLocation sourceLocation) {
  // if (!handler.isIgnoring(IMessage.ERROR)) {
  // handler.handleMessage(new Message(message, sourceLocation, true));
  // }
  // }

  /**
   * Report a warning
   *
   * @param message
   * @param location
   */
  private static void reportWarning(String message, AjAttributeStruct location) {
    if (!location.handler.isIgnoring(IMessage.WARNING)) {
      location.handler.handleMessage(new Message(message, location.enclosingType.getSourceLocation(), false));
    }
  }

  /**
   * Parse the given pointcut, return null on failure and issue an error
   *
   * @param pointcutString
   * @param struct
   * @param allowIf
   * @return pointcut, unresolved
   */
  private static Pointcut parsePointcut(String pointcutString, AjAttributeStruct struct, boolean allowIf) {
    try {
      PatternParser parser = new PatternParser(pointcutString, struct.context);
      Pointcut pointcut = parser.parsePointcut();
      parser.checkEof();
      pointcut.check(null, struct.enclosingType.getWorld());
      if (!allowIf && pointcutString.indexOf("if()") >= 0 && hasIf(pointcut)) {
        reportError("if() pointcut is not allowed at this pointcut location '" + pointcutString + "'", struct);
        return null;
      }
      pointcut.setLocation(struct.context, -1, -1);// FIXME -1,-1 is not
      // good enough
      return pointcut;
    } catch (ParserException e) {
      reportError("Invalid pointcut '" + pointcutString + "': " + e.toString()
          + (e.getLocation() == null ? "" : " at position " + e.getLocation().getStart()), struct);
      return null;
    }
  }

  private static boolean hasIf(Pointcut pointcut) {
    IfFinder visitor = new IfFinder();
    pointcut.accept(visitor, null);
    return visitor.hasIf;
  }

  /**
   * Parse the given type pattern, return null on failure and issue an error
   *
   * @param patternString
   * @param location
   * @return type pattern
   */
  private static TypePattern parseTypePattern(String patternString, AjAttributeStruct location) {
    try {
      TypePattern typePattern = new PatternParser(patternString).parseTypePattern();
      typePattern.setLocation(location.context, -1, -1);// FIXME -1,-1 is
      // not good
      // enough
      return typePattern;
    } catch (ParserException e) {
      reportError("Invalid type pattern'" + patternString + "' : " + e.getLocation(), location);
      return null;
    }
  }

  static class ThrownFormalNotDeclaredInAdviceSignatureException extends Exception {

    private final String formalName;

    public ThrownFormalNotDeclaredInAdviceSignatureException(String formalName) {
      this.formalName = formalName;
    }

    public String getFormalName() {
      return formalName;
    }
  }

  static class ReturningFormalNotDeclaredInAdviceSignatureException extends Exception {

    private final String formalName;

    public ReturningFormalNotDeclaredInAdviceSignatureException(String formalName) {
      this.formalName = formalName;
    }

    public String getFormalName() {
      return formalName;
    }
  }
}
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